Steam-trap.



E. V. ANDERSON.

STEAM TRAP.

APPLICATION FILED SEPT. 16, 19h?- 1,173,634. Patented Feb. 29,1916.

FIGJ. J

INVENTOR WITNESSES TINT EDWARD V. ANDERSON, 0F MONESSEN, PENNSYLVANIA, ASSIGNOB. OF UNE-HALF TO CHARLES E. GOLDEN, OF GRAFTON, PENNSYLVANIA.

STEAM-TRAP.

To all whom it may concern Be it known that I, EDWARD V. ANDER- SON, a citizen of the United States, residing at Monessen, in the State of Pennsylvania, have invented certain new and useful Improvements in Steam-Traps, of which the following is a specification.

My invention relates to steam traps and has as its principal objects the provision of a steam trap in which the working parts are easily inspected, the valve may be removed and replaced without disconnecting piping or opening the casing; to provide for improved efficiency of radiating surfaces and to simply and generally improve such devices.

I have illustrated the invention in the accompanying drawing in which Figure l is a vertical central section of a steam trap embodying the invention, and

Fig. 2 is a front elevation. I

The main casing 3, preferably cast in the form shown, is provided with a permanent end cap 4 provided with an inlet opening 5 and an outlet 6. The outlet port, however, instead of directly going to the interior is connected with a passage (7) communicating with a passage (8) in a separate supplemental cap 9 which has, cast integral with it, a valve chamber and support 10, to which is pivoted the arm 11 carrying on'its inner end an extension 12 and a float 13. g

The integral cap and cylinder casting 9 10, is bored out and carries a piston valve 1% having a slot engaging the pivoted lug 15 formed as part of arm 11. The valve 14 engages a perforated seat 16 made in the form of a screw plug as shown and in line with a screw plug 17 closing the supplemental cap 9. An enlarged portion of the casing 10 contains perforations 18 and the main casing 3 is provided with a cleaning port closed by plug 19 and also with a pet cock 20.

It will be noticed that practically the entire surface of the steam trap chamber is a radiating surface. When the condensed steam rises and lifts the float 13 to the proper critical point, the bell-crank lever lug 15 (which has considerable play in a Specification of Letters Patent.

Patented Feb. 29, 1916.

Application filed September 16, 1914. Serial No. 862,008.

notch in the piston), moves to the right and unseats the piston valve 14 from its seat 16. The water then passes by ports 18 and passages 8 and 7 to the outlet 6, above the water level in the trap. lVhen the trap is emptied, the valve 14 is again and positively closed by the action of the float, (the rear end of the valve 14 being protected from steam pressure by a cap 10).

The valve and valve seat are easily inspected by removal of the screw plug 17; and it will be noted that by removing the supplementary cap 9, the valve, valve seat, bell-crank lever and float arm may all be drawn out the opening in the cap 4 for inspection or repair, and if desired, the float may be detached by loosening the screw 12 and an entirely new valve can be inserted immediately. Thus all repairs or renewals of the valve or any of the working parts, may be made without disconnecting any pipe, or removing the hood of the casing and with slight interruption to the operation. Other advantages of the structure will readily occur to those familiar with the art.

Having thus described my invention and illustrated its use, what I claim is the following:

In a steam trap, the combination with a main casing, and a cap therefor having an opening, and a separate water outlet, of a supplementary cap closing said opening and provided with a passage connecting said opening with the separate water outlet, a perforated screw plug interposed in said passage and forming a valve seat, an inwardly projecting casing integral with said supplementary cap and having ports communicating with the main casing, a slide valve in said integral cylinder, and a float in the main casing operating said slide valve, substantially as described.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses.

EDvVARD V. ANDERSON.

Witnesses:

A. J. SMITH, A. N. SHUsTnR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

